Venetian blind



April 7, 1936. J. NISENSON VENETIAN BL'IND Filed Nov. '25, 1935 2Sheets-Sheet 2 Fig.8.

Fig. 7.

Lid

INVENTOR.

Manx A. Jm ea ATTORNEY.

Jill

Patented Apr. 7, 1936 UNlTED STATES orri WENETIAN EH ApplicationNovember 26, 1935, Serial No. tinted ii illai.

This invention relates generally to improve ments in window-blinds of aclass known as Venetian blinds, and more particularly to improvements inthe head-piece and bracket supporting means therefor.

This invention has for an object the provision of structure wherein thehead-piece or casing thereof may be simply and conveniently adjustedlongitudinally to properly fit window easements of various widths.

Heretofore, in Venetian blinds the mechanism for raising or tilting theslats has been exposed, and could not be conveniently removed forcleaning purposes. It is a further object of this invention to provide aVenetian blind in which all of the operating mechanism is concealed fromview in a casing, and yet provide means for readily detaching the casingfrom supporting brackets so that the mechanism can be easily cleaned andoiled when necessary.

Another object of the present structure is to provide an arrangement ofpulleys or rollers with relation to the operating mechanism whereby theoperation thereof is unafiected when the casing is longitudinallyadjusted.

An additional object of the present invention is the provision ofstructure whereby the headpiece after insertion within the supportingbrackets is very quickly latched in place and the latchlng elements are'in full view thus presenting positive indication as to whether or notthe headpiece or casing has been properly seated thereby promotingsafety. The latching elements however, though mechanically adequate,contribute to rather than detract from the harmonious symmetry of theappearance of the casing, as placed within the mounting or supportingbrackets therefor.

This invention presents a Venetian blind headpiece and bracketconstruction which is mechanically durable and substantial, yet light inweight,

extremely compact and inconspicuous, neat and good looking, readilyremoved from'the supporting brackets or replaced thereon in asimplemannor by anyonev having no particular skill.

An advantage. of the present structure lies in the fact that thehead-piece and brackets therefor may be utilized with Venetian blindassemblies having various types of slat tilting and elevatingmechanisms.

A stillfurther advantage of the present construction resides in thesimplicity in manufacture and assembly, together with the adaptabilityof the parts wherein slight changes in assembly permit blinds of extremevariations in width to (ill. 1156-1?) be constructed with consequentreduction in manufacturing costs. A single form of bracket is used whichbecause of the novel structure thereof may be used at either the rightor left end of the head bar. This interchangeability is also true ofguide plate, and right angle roller trunniom'ng plates.

These objects, further features, incidental ends and advantages willmore fully appear in the progress of this disclosure and as pointed outin m the appended claims. i

In the accompanying drawings, similar reference characters designatecorresponding p rts throughout the several views in which:

Figure l. is a fragmentary elevationa view 15, showing a Venetian blindembodying the present invention, and attached to a narrow frame windowcasement.

Figure 2 is a front elevational View of one of the supporting bracketsas used with the left end of the head-piece or casing.

Figure 3 is a side elevational view of the bracket shown in Figure 2 asviewed from the right side thereof and looking into the bracket.

Figure t is a plan view of the bracket shown in Figure 2.

Figure .5 is a fragmentary view in plan of the left end of thehead-piece or casing.

Figure 6 is a sectional view of Figure 5 taken along the plane t-tthereon.

Figure 7 is a fragmentary front elevational view of the left end of thehead-piece as seated in'a bracket and adjusted as when fitted into awindow casement which is narrow for the particular head-piece length.

Figure 8 is similar to Figure 7 except that the state of adjustmentshown is for a relatively wide window casement.

Figure 9'is a sectional view of Figure 5 taken along the line i i- 9thereon.

Inasmuch as the ends of the head piece or casing are similar inconstruction except that one may be described as a left hand end asdistinguished from a right hand end, it is believed that an illustrationof one of the head-piece ends in combination with a bracket will besufficient for anyone skilled in the art to understand the invention.

The head-piece frame or casing indicated generally by numeral it iscomprised of a main body portion it which is substantially U shape incross section (see Figure 9), an extendible guide plate l2 and anextendible latching plae it.

Guide plate i2 is maintained in position by means of a screw it inthreaded engagement therewith. Screw l4 freely penetrates alongitudinally directed slot [5 in the bottom wall l6 of body portionll. When the screw I4 is loosened, plate l2 may be adjustedlongitudinally with relation to body portion II and subsequenttightening of said screw clamps plate l2 in place.

The extendible latching plate I3 is adapted to nest vertically withinbody portion II and is capable of limited longitudinal movement therein.Plate l3 rests upon bottom wall l6, slidably contacts the inner surfaceof the front wall of body portion H and the lower surface of an inwardlyor rearwardly bent right angle flange ll integral with portion H, and ismaintained in place by a right angle plate 20. Plate i3 may thus ridefreely within the space indicated by numeral l9 on Figure 9 of theaccompanying drawings, or the dimensions of the related parts may be soadjusted that plate i3 is subjected to slight friction when moved. Theshifting of plate i3 is facilitated by the manual gripping tab 2|extending forwardly from the outer end of said plate. Longitudinalmotion of plate [l3 is limited by means of the inwardly upset lug 22riding within the cut out way 23 in the upper edge of plate 20.

Numeral 24 designates a manual control cord passing upwardly through anorifice 25 in wall 56, over a pulley or roller 26, and thence to anysuitable slot elevating or tilting means well known in the art.Displacement of cord 24 may be maintained, for example, by means of apivotal dog 2'! which normally lies in a position indicated by the shortdash lines on Figure 6. Raising the cord 24 and shifting the same to theleft as viewed on said figure causes the cord to engage said dog whichrises to the position indicated by the dotted lines on said figure. Inthe latter position the dog wedges the cord 24 against roller 26,securely holding the cord in the desired position. A short downward tugon cord 24 releases dog 21 which falls by gravity to the inactiveposition thereof. The roller 26 and the dog 2? may be mounted in anysuitable manner but are preferably trunnioned between plate 20 and asimilar right angle plate 28. If the spindles 29 are previously securedwithin the roller 26 and the dog 21 or are manufactured integraltherewith, assembly is greatly simplified. The spindles with the dog androller in place are inserted in holes in plates 20 and 28 with the baseof the latter plate superposing the former. After being properly jiggedin place they are simultaneously spot welded to each other and to thebottom wall l6 as indicated by numeral 33 on Figure 9, all in oneoperation. It may be noted at this point that the rear horizontal edgesof plates 20 and 28 together with the inner surface of the rear wall ofbody portion ll serve as ways for the movement of guide plate l2. Wheredesired, plate l3 may be cut away as at [3' to avoid interference withthe ends of spindles 29.

The supporting bracket 3| is comprised of a side wall 32, an inwardlybent right angle top flange 33, a bottom flange 34, a rear flange 35,and a front latching flange 36. Brackets 3! are attached to the Windowcasement in any suitable manner, preferably by screws (not shown)penetrating the orifices in the brackets. The bracket Si is providedwith orifices in the side wall 32, top flange 33, rear flange 35, andbottom flange 34. Which of these screw holes are used for attachment isdetermined by the particular casement, but ordinarily the orifices inthe bottom flange 34 are not used as the lowermost flange is used tosupport the casing Hi. When the bracket 3| is inverted for use insupporting the opposite end of the casing Ill, flange 24 becomes the topand flange 33 the bottom.

With left and right hand brackets in place in the casement, placing thecasing in operative position is a simple matter, it being necessary onlyto slide the bottom wall l6 onto the bottom flanges 34, until the rearwall of body portion ll strikes the rear flanges 35. Latching plates I3are then slid into place, outwardly of the body portion ll until saidplates pass behind the front latching flanges 36 which are suitably cutout as at numeral 39 to allow the tabs 2| to pass.

Plates l3 are moved until the outer vertical edges thereof strike theinner surface of side walls 32. It may now be seen that the outwardmovement of latching plates l3 in addition to locking the casing ill inplace also serves to fully close the space between the body portion 1 land the latching flanges 36 thereby promoting the dust proof propertiesof the casing 10. Prior to or after the last mentioned step, the guideplates 12 are adjusted and clamped as set forth above so that the bodyportion ii is centered with relation to the supporting brackets 3|. Theadjustment of plates ii is required only once when the Venetian blindassembly is first installed in a given window casement. Subsequentremoval or replacement requires only the manipulation of the latchingplates l3. On subsequent replacement of the casing 80, the centeringthereof is facilitated by the rounded rear corners 40 of plates I2 whichbear against the forward edges of side walls 32 and pass through the cutout portions 4| in the front latching flanges 36. Not only do the guideplates l2 aid in centering the casing ill, but said plates also tend toprevent the accidental displacement of the casing which might fall downwhere the width of the window casement is considerably greater than thelength of body portion M.

The foregoing disclosure is to be regarded as descriptive andillustrative only, and not as restrictive or limitative of theinvention, of which obviously an embodment may be constructed includingmodifications without departing from the general scope herein indicatedand denoted in the appended claims.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is:

1. In a Venetian blind, a casing, and a shiftable latching plate on saidcasing.

2. In a Venetian blind, a casing, and a guide plate adjustably attachedto the casing at one end thereof. I

3. In a Venetian blind, a casing, a shiftable latching plate and a guideplate adjustably attached to the casing at one end thereof.

l. A bracket for removably holding a Venetian blind head-piece having ashiftable latching plate thereon, said bracket including a latchingflange adapted to be detachably engaged by the shiftable plate on thehead-piece.

5. In a Venetian blind having a head-piece casing with a shiftablelatching plate thereon, a bracket including a latching flange adapted tobe detachably engaged by said latching plate and a bottom flange forsupporting said head-piece casing.

6. In a Venetian blind having a head-piece casing with a shiftablelatching plate thereon, a bracket including a latching flange adapted tobe detachably engaged by said latching plate,

aosaaai and a rear flange adapted to engage the rear Wall ofsaid-liead-piece casing and serving as a rear limit .for transversemotion of said headpiece casing.

7. In a Venetian blind having a head-piece casing with a shiftablelatching plate thereon, a bracket including a latching flange adapted tobe detachably engaged by said latching plate and a top flangeforengaging the top of said head piece casing.

8. In a Venetian blind, avbracket having a latching flange, a casing,and a movable latching plate on said casing adapted in one positionthereof to engage said flange and in another position to clear saidflange.

9. In a Venetian blind, a bracket having a latching flange, a casing,and a movable latching plate onsaid casing adapted in one positionthereof to engage said flange and in another position to clear saidflange, and a guide plate adjustabiv attached to the casing at one endthereof.

10. In a Venetian blind, a bracket having a latching flange with anaperture therein, a casing having a movable latching plate adapted inone position thereof to engage said flange and in another position toclear said flange, and a guide plate adjustablv attached to the casing.

at one end thereof and adapted to pass through said aperture when thecasing is placed into said bracket.

11. In a Venetian blind, a casing having a front wall, a stationaryplate within the casing and to the rear of said front wall, and ashiftable latching plate between said iront wall and said stationaryplate, said shiitable plate being adapted for longitudinal movementtherebetween.

JULIUS NISENSON.

